Particular Electrolyte Layer Patents (Class 359/270)
  • Publication number: 20090002801
    Abstract: An electrochromic mirror includes a transparent electrode film, an electrochromic film formed at one thickness direction side of the transparent electrode film, a light reflective film that reflects light that has transmitted through the transparent electrode film and the electrochromic film, a lithium ion transmissive film provided between the electrochromic film and the light reflective film, an electrically conductive film provided at the one thickness direction side of the transparent electrode film and at a side of the light reflective film opposite from the lithium ion transmissive film, and an electrolytic solution that comprises lithium ions and is enclosed between the light reflective film and the electrically conductive film. The lithium ion transmissive film transmits lithium ions and imposed diffusion of silver from the side of the light reflective film to the side of the electrochromic film.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 1, 2009
    Applicants: KABUSHIKI KAISHA TOKAI-RIKA-DENKI SEISAKUSHO, 260, TOYOTA 3-CHOME, National University Corporation Nagoya University
    Inventors: Junichi NAKAHO, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
  • Publication number: 20090002799
    Abstract: An electrochromic mirror includes an electrically conductive reflective film capable of reflecting light that is incident thereto and having electrical conductivity in which plural fine penetration holes are formed, an electrochromic film that is provided at a side of the electrically conductive reflective film at which the light is incident and reflected, an electrically conductive film that is provided at a side of the electrically conductive reflective film that is opposite from the electrochromic film, and an electrolytic solution that contains lithium ions and is enclosed between the electrically conductive film and the electrically conductive reflective film. The plural penetration holes formed in the electrically conductive reflective film penetrate in a thickness direction thereof, and a ratio between a distance between respective centers of the penetration holes and an inner peripheral diameter dimension of the penetration holes is 7 or more.
    Type: Application
    Filed: June 23, 2008
    Publication date: January 1, 2009
    Applicants: KABUSHIKI KAISHA TOKAI-RIKA-DENKI-SEISAKUSHO, National University Corporation Nagoya University
    Inventors: Junichi NAKAHO, Masaharu Hattori, Atsushi Yamaguchi, Nagahiro Saito, Takahiro Ishizaki, Osamu Takai
  • Patent number: 7463399
    Abstract: The flat panel display includes an electrochromic device that is a controlling unit. The electrochromic device reversibly makes electrolytic oxidizing and reducing reactions so that coloring and decoloring can be made reversibly, when voltage is applied. With such the construction, the flat panel display controls the voltage applied to the electrochromic device, enabling to selectively display an image on front side or two sides.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: December 9, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun Soo Shin, Jae Kyeong Jeong, Yeon Gon Mo, Dong Un Jin
  • Patent number: 7450292
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: November 11, 2008
    Assignee: Los Alamos National Security, LLC
    Inventors: Anthony K. Burrell, Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey
  • Publication number: 20080266642
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.
    Type: Application
    Filed: September 22, 2006
    Publication date: October 30, 2008
    Inventors: Anthony K. Burrell, Anoop Agrawal, John P. Cronin, Juan C.L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey
  • Patent number: 7428090
    Abstract: Deterioration of characteristics due to repeated cycles of coloration and discoloration in an electrochromic element comprising an oxidative coloration layer composed of a nickel oxide and a electrolyte composed of a solid electrolyte is suppressed. A lower ITO transparent electrode film 12 is formed on a transparent substrate 10. A nickel oxide film 32 making up an oxidative coloration layer, an intermediate layer 33, a tantalum oxide film making up a solid electrolyte layer, a mixed film comprising a tungsten oxide and a titanium oxide making up a reductive coloration layer, and an upper ITO transparent electrode film 20 making up an upper electrode film are formed on the lower ITO transparent electrode film 12 on this order. The intermediate layer 33 is a transparent film comprising a metal oxide such as SnO2, a metal such as Al, or a composite of the metal oxide and the metal.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: September 23, 2008
    Assignee: Murakami Corporation
    Inventors: Akihiko Fukazawa, Chihiro Minami
  • Patent number: 7423797
    Abstract: An elongate colored structure comprising: an electrically conductive wire; a dye layer surrounding a length of the conductive wire; and an electrically conductive, light transmissive layer surrounding the dye layer; wherein the dye layer is capable of changing its color when a voltage is applied between the conductive wire and the light transmissive layer.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: September 9, 2008
    Assignee: Spyder Navigations L.L.C.
    Inventor: Shogo Nakade
  • Patent number: 7420727
    Abstract: The present invention is an active matrix electrochromic display architecture where the active components are placed on the backplane of the display, thereby maximizing the viewable pixel area. The cathode of the electrochromic pixel is placed on top of the active components, with respect to the viewer, thereby allowing the active components to be as large as desired while not interfering with the viewable area of the pixel.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: September 2, 2008
    Assignee: NTERA Limited
    Inventor: Micheal Cassidy
  • Publication number: 20080204849
    Abstract: This invention provides a display element that has a simple member construction, can be driven at a low voltage, has high display contrast and white display reflectance, and has reduced unevenness in images. The display element comprises opposed electrodes and an electrolyte containing silver or a compound containing silver in its chemical structure and a porous white scattered material provided between the opposed electrodes. The opposed electrodes are driven and operated so that silver is dissolved and precipitated. The display element is characterized in that the porous white scattered material is formed by coating an intimate water mixture containing titanium oxide, an aqueous polymer for binding the titanium oxide, and a thickening polysaccharide onto at least one of the opposed electrodes, and then drying the coating.
    Type: Application
    Filed: April 6, 2006
    Publication date: August 28, 2008
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventor: Noriyuki Kokeguchi
  • Patent number: 7411716
    Abstract: Disclosed is an electrochromic device comprising: (a) a first electrode; (b) a second electrode; (c) an electrochromic material; and (d) a gel polymer electrolyte containing an ionic liquid. A method for manufacturing the same is also disclosed. The electrochromic device uses a gel polymer electrolyte comprising an ionic liquid. Therefore, there is no problem related with electrolyte leakage. Additionally, it is possible to manufacture electrochromic devices by using plastic materials, because the ionic liquid gel polymer electrolyte permits structural deformation with ease. Further, because the electrochromic device uses an ionic liquid, it is possible to minimize side reactions between constitutional elements of an electrochromic device and electrolyte.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: August 12, 2008
    Assignee: LG Chem, Ltd.
    Inventors: Jae Seung Oh, Jae Duk Park, Byoung Bae Lee, Won Jong Kwon, Sang Ho Kim, Su Jin Mun
  • Patent number: 7403319
    Abstract: An electrochromic device in which specific channel direction for the conduction of ions is implemented. As a result ionic crosstalk between display pixels is greatly reduced and unwanted transient coloration effects are minimized. Further, specific gel, polymer, or ionic liquid solutions can greatly eliminate the corrosive effects associated with the use of electrolyte salt solutions.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: July 22, 2008
    Assignee: NTERA Limited
    Inventors: Nigel Leyland, David Corr, Micheal Cassidy, Francois Pichot, Nikolaos Vlachopoulos, Michael Ryan
  • Patent number: 7397595
    Abstract: This invention provides an electrochromic device which has superior coloration repeat properties, high light transmittance and small thickness. A film is provided comprising a first electrode and second electrode in the same plane, and an electrochromic region and electrolyte region laminated in this plane. The electrochromic region is provided on the second electrode, the electrolyte region is provided on the first electrode, and the boundary between the electrochromic region and electrolyte region lies in the planar direction of the film.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 8, 2008
    Assignee: Hitachi, Ltd.
    Inventor: Kyoko Kojima
  • Patent number: 7397594
    Abstract: A display element containing: (a) a first electrode which is transparent and is controlled by a driver element; (b) a second electrode; and (c) a solid polymer electrolyte layer containing a colorant and metal ions, the solid polymer electrolyte layer being provided between the first electrode and the second electrode, wherein the first electrode has an anti-reflecting layer on a side opposite to the solid polymer electrolyte layer.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: July 8, 2008
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Toshihisa Takeyama
  • Publication number: 20080144162
    Abstract: The present invention concerns an electrochromic cell comprising a layer (4) of electrochromic material to which an electrolyte layer (3) is applied, means (7, 8, 9) being designed to establish a potential difference between these layers; said electrolyte comprises at least one compound of general formula: Na1+xZr2SixP3?xO12 ??(1) in which x is chosen to respond to the following conditions: 1, 6?x?2, 4. The present invention also concerns a glass pane or a rear-view mirror including such a cell.
    Type: Application
    Filed: May 30, 2007
    Publication date: June 19, 2008
    Applicant: Schefenacker Vision Systems France S.A.
    Inventors: Bernard Duroux, Allan Billard, David Howart
  • Publication number: 20080130086
    Abstract: An electrochromic device is disclosed, including two electrochromic elements, which are switched in a time separated manner. Each electrochromic element is arranged of electrochemically active material, and connected to a counter layer by a solidified electrolyte. In at least one embodiment, the electrochromic device further includes at least one resistive device which restricts the electrochemical reaction of one of the electrochromic element, such that a color of this electrochromic element is not substantially altered until the other electrochromic element is reacted to a predetermined extent.
    Type: Application
    Filed: November 8, 2007
    Publication date: June 5, 2008
    Inventors: Anna Malmstrom, David A. Nilsson
  • Patent number: 7372610
    Abstract: A heat treated electrochromic device comprising an anodic complementary counter electrode layer comprised of a mixed tungsten-nickel oxide and lithium, which provides a high transmission in the fully intercalated state and which is capable of long term stability, is disclosed. Methods of making an electrochromic device comprising an anodic complementary counter electrode comprised of a mixed tungsten-nickel oxide are also disclosed.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: May 13, 2008
    Assignee: SAGE Electrochromics, Inc.
    Inventors: Mark Samuel Burdis, Douglas Glenn John Weir
  • Patent number: 7352500
    Abstract: A display device comprising a plurality of independently addressable pixels (1) comprising: a first substrate (2); a counter-electrode (3); second substrate (4); a stack of electrochromic layers (5a, 5b, 5c) associated with said second substrate (4); an electrolyte (6) disposed between said counter-electrode (3) and said stack of electrochromic layers (5a, 5b, 5c). Said electrochromic layers (5a, 5b, 5c) are each independently addressable for switching operation; and separated from each other by layers of an electrolyte (7).
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: April 1, 2008
    Assignee: Koninklijke Philips Electronics, N.V.
    Inventors: Hendrik Johannes Boudewijn Jagt, Nicolaas Petrus Willard, Mark Thomas Johnson
  • Patent number: 7333259
    Abstract: Multicolor display elements are disclosed that are adapted to full color electric papers, which comprises a display electrode, counter electrode, electrolyte, and display layer, wherein the counter electrode is disposed oppositely to the display electrode, the electrolyte is filled into a space provided between the display electrode and the counter electrode, the display layer is disposed on the surface, which faces the counter electrode, of the display electrode, the display layer contains plural electrochromic compositions in a condition that the plural electrochromic compositions are separated into plural layers within the display layer or are mixed together within the display layer, and at least one of threshold voltage for coloring condition and threshold voltage for decoloring condition, or at least one of charge amount required for coloring into a sufficient color density and charge amount required for sufficiently decoloring, are substantially different each other between the plural electrochromic com
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: February 19, 2008
    Assignee: Ricoh Company, Ltd.
    Inventors: Shigenobu Hirano, Takuji Kato, Hiroyuki Takahashi, Ikue Kawashima, Takeshi Shibuya
  • Patent number: 7318648
    Abstract: A vehicle mirror assembly comprising a reflective element for reflecting incident light, the reflective element having a viewable side, a dimming element for varying the intensity of light reflected from the viewable side, a photo-electric power cell for powering the dimming element for varying the intensity of reflected light and a controller for controlling the dimming element in response to ambient light conditions, wherein, in use, the intensity of the light reflected from the viewable side is reduced in low ambient light conditions. In other embodiments a power source is defined, for providing interment power to power the dimming element for varying the intensity of light reflected, the power being supplied by the photo-electric power cell.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: January 15, 2008
    Assignee: Schefenacker Vision Systems Australia Pty Ltd.
    Inventors: Robert William Gilbert, Kash A. Munir
  • Patent number: 7312914
    Abstract: Between each transparent pixel electrode driven by TFT as a drive device and a common electrode, a polymer layer located in contact with the transparent pixel electrode and electrically active to change in color by electrochemical oxidization or reduction and a polymeric solid electrolytic layer located in contact with the polymer layer and containing a coloring agent are interposed. Since electrochemical oxidization or reduction brings about a color change, the contrast and the black concentration can be enhanced, and bronzing after long-time use does not occur.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: December 25, 2007
    Assignees: Sony Corporation, Sony International (Europe) GmbH
    Inventors: Kenji Shinozaki, Akio Yasuda, Kazuhiro Noda, Toru Udaka, Mieko Kuwahara
  • Patent number: 7265891
    Abstract: An electrochromic device is prepared by forming multiple layers of selected materials on a substrate in a vacuum processing chamber. A first of these layers is an electrode layer deposited directly on the substrate and used for making contact to a subsequently deposited precursor film, preferably tungsten oxide, from which an electrochromic layer is formed by lithium loading in the presence of ionized nitrogen. This not only forms the electrochromic layer by diffusion of the lithium into the tungsten oxide, but also forms a thin lithium nitride ion transfer layer on the then exposed surface. Subsequently, a lithium fluoro-nitride electrolyte layer is formed on the ion transfer layer by evaporation from a lithium fluoride source in the presence of ionized nitrogen. An ion storage layer, which may be a vanadium oxide and a transparent second electrode layer are subsequently vacuum deposited.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: September 4, 2007
    Assignee: Eclipse Energy Systems
    Inventor: Hulya Demiryont
  • Patent number: 7177064
    Abstract: Disclosed is a display device using a printed circuit board (PCB) as a substrate of a display panel. The display device includes the PCB formed with a via hole, a display panel having an electrode aligned adjacent to one side of the via hole formed in the PCB in order to apply an electric signal to a pixel or a segment, a driving circuit section for applying an electric signal to the display panel, and a wiring section for electrically connecting the electrode of the display panel to the driving circuit section through the via hole. The electric signal of the driving circuit is directly applied to the lower electrode through the via hole of the PCB, so the length of the electrode line used for wiring can be significantly reduced, thereby improving the response speed of the display device.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: February 13, 2007
    Assignee: LG Chem, Ltd.
    Inventor: Kee Yong Park
  • Patent number: 7088490
    Abstract: The present invention provides an electrochromic mirror including: a transparent substrate; a transparent electrode film which is formed on the transparent substrate and has conductivity; an electrochromic film which is formed on the transparent electrode film and can be colored by reduction; a light reflecting film which is formed on the electrochromic film and which hydrogen atoms or lithium atoms can permeate; a support substrate which has a conductive part having conductivity formed on at least one surface thereof; and an electrolytic solution containing at least hydrogen ions or lithium ions, and neutral molecules or negative ions which can be oxidized, wherein the transparent substrate is located close to the support substrate such that the conductive part faces the light reflecting film, and the electrolytic solution is enclosed between the light reflecting film and the conductive part.
    Type: Grant
    Filed: June 16, 2004
    Date of Patent: August 8, 2006
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki Seisakusho
    Inventors: Junichi Nakaho, Masao Ayabe, Masaharu Hattori
  • Patent number: 7042615
    Abstract: Electrochromic devices having as an active electrode materials comprising Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, I and chalcogenides are disclosed. The addition of other metals, i.e. Ag and Cu to the active electrode further enhances performance.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: May 9, 2006
    Assignee: The Regents of the University of California
    Inventor: Thomas J. Richardson
  • Patent number: 7031043
    Abstract: An electrochromic device comprising: a first substantially transparent substrate having an electrically conductive material associated therewith; a second substrate having an electrically conductive material associated therewith; and an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: at least one solvent; an anodic material; a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, and wherein at least one of the anodic and cathodic materials is slow-diffusing; and an electron shuttle, wherein the electron shuttle serves to decrease switching time of the electrochromic device relative to the same without the electron shuttle.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: April 18, 2006
    Assignee: Gentex Corporation
    Inventors: Kathy E. Roberts, Rongguang Lin, Kelvin L. Baumann, Thomas F. Guarr, David A. Theiste
  • Patent number: 7001868
    Abstract: To provide an image recording method and apparatus that can record and display an image of free pattern without forming the complex wirings in an electrochromic material, and to reduce the manufacturing costs of the image recording apparatus employing the EC material. A recording sheet 7 having a coloring layer made of an electrochromic material and an electrolytic layer with an increasing electrical conductivity in a specific temperature range is employed, and a recording head 13 with a plurality of heating elements arranged in a linear direction is moved relative to the surface of the recording sheet 7 in the direction orthogonal to the linear direction while at the same time a voltage is applied to the front and back faces of the recording sheet 7, thereby selectively heating the heating elements 11. Thereby, a coloring reaction is caused only in a part where heat is applied by the heating elements of the recording sheet 7 and voltage is applied to form an image on the recording sheet 7.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: February 21, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mitsuru Sawano
  • Patent number: 7002723
    Abstract: In a display device, a first electrode and a second electrode are mounted on a first substrate, a second substrate is arranged to face the first substrate with a gap provided between the first substrate and the second substrate, and a third electrode is mounted on the second substrate. A first layer is formed in a gap between the first substrate and the second substrate at the side of the first substrate and containing a ECL material that emits light due to electrochemical oxidation or reduction. A second layer is formed in the gap between the first substrate and the second substrate at the side of the second substrate and containing a EC material having the color changed due to electrochemical oxidation or reduction.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: February 21, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shintaro Enomoto, Shuichi Uchikoga, Isao Amemiya, Yutaka Nakai
  • Patent number: 6995892
    Abstract: The subject of the invention is an electrically controllable device comprising at least one substrate provided with a functional stack of layers comprising at least two active layers separated by an electrolyte. The stack is placed between a lower electrode and an upper electrode. The device comprises n regions which are independently electrically controllable, using the lower electrode having a pattern A in one or two dimensions, the stack of layers, at least one of the active layers and the electrolyte of which having a pattern B in two dimensions, the upper electrode having a pattern C in two dimensions, so that the superposition of the patterns A, B and C, defines said n regions, with a physical discontinuity between two adjacent regions at least both at the level of the upper electrode and at the level of one of the active layers and of the electrolyte.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: February 7, 2006
    Assignee: Saint-Gobain Glass France
    Inventors: Xavier Fanton, Alexander Oehrlein
  • Patent number: 6995891
    Abstract: An electrochromic device is achieved that exhibits the characteristics of impact-resistant safety glass by starting with a solid electrolyte sheet material and a peripheral sealant material sandwiched between substrates to heat and pressure such that the electrolyte bonds to the treated surfaces of the substrates with an adhesion of at least 1.8 kg/linear cm width causing the electrolyte to exhibit a tensile strength of at least 5 kg/cm2.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: February 7, 2006
    Assignees: Schott North America Inc., Magna Donnelly Corporation
    Inventors: Anoop Agrawal, Yasser Elkadi, Torsten Holdmann
  • Patent number: 6961168
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: November 1, 2005
    Assignee: The Regents of the University of California
    Inventors: Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell
  • Patent number: 6940628
    Abstract: An electrochemical device comprising at least one substrate (1,7), at least one electroconductive layer (2,6) at least one electrochemically active layer (3,5) capable of reversibly injecting ions, and an electrolyte (4), wherein the electrolyte (4) is a layer or a multilayer stack comprising at least one layer (4b) made of an ionically conductive material capable of reversibly injecting said ions but whose overall degree of oxidation is maintained essentially constant.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: September 6, 2005
    Assignee: Saint-Gobain Vitrage
    Inventor: Jean-Christophe Giron
  • Patent number: 6879424
    Abstract: The present invention relates to a composition and to a display device having the composition positioned between electrodes. The composition contains: (a) a compound that undergoes a reversible redox reaction to generate a pH gradient between the two electrodes, (b) an indicator dye, (c) a charge transport material, and optionally, (d) a matrix material and (e) an opacifier, and (f) secondary redox couple wherein components (a), (b), and (c) are different from one another and the standard reduction potential of component (a) is less than the standard reduction potential for the other components. Depending on the electric field present between the electrodes, a display image may be generated.
    Type: Grant
    Filed: March 19, 2002
    Date of Patent: April 12, 2005
    Assignee: Aveso, Inc.
    Inventors: John B. Vincent, Susan J. Babinec, Daniel L. Dermody, Yu Chen
  • Patent number: 6876478
    Abstract: An electrochromic medium for use in a normally operating electrochromic device comprising an anodic material and a cathodic material wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic, an additive, and means associated with the additive for maintaining a colorless or nearly colorless electrochromic medium while the electrochromic medium is in a high transmission state relative to an electrochromic medium without the additive.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: April 5, 2005
    Assignee: Gentex Corporation
    Inventors: Jeffrey R. Lomprey, Thomas F. Guarr
  • Patent number: 6876477
    Abstract: An electrochromic device comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an anodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and (4) a color-stabilizing additive, wherein the color-stabilizing additive is electroactive within a normal operating voltage of the electrochromic device; and (d) means associated with the color-stabilizing additive for maintaining an at least nearly colorless electrochromic device while the electrochromic device is in an open circuit and/or zero potential state relative to the same device without the color-stabilizing additive.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: April 5, 2005
    Assignee: Gentex Corporation
    Inventors: Jeffrey R. Lomprey, Thomas F. Guarr
  • Patent number: 6871967
    Abstract: A solid type EC element having a substrate; a lower electrode layer formed on the substrate; an EC layer formed on the lower electrode layer; and an upper electrode layer formed on the EC layer is disclosed in which coloring regions having a complicated shape can easily be applied, and a phenomenon of blurred color occurring around coloring regions can be prevented. The lower electrode layer is divided by one or more parting lines non-linearly formed along the outline of a desired coloring region so as to surround the coloring region into a portion for forming a coloring region including the coloring region and a portion for not forming a coloring region not including the coloring region in the state the portion for forming a coloring region and the portion for not forming a coloring region are not conducted to each other.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: March 29, 2005
    Assignee: Murakami Corporation
    Inventor: Akihiko Fukazawa
  • Patent number: 6862125
    Abstract: A single-compartment reversible mirror device having a solution of aprotic molten salt, at least one soluble metal-containing species comprising metal capable of being electrodeposited, and at least one anodic compound capable of being oxidized was prepared. The aprotic molten salt is liquid at room temperature and includes lithium and/or quaternary ammonium cations, and anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). A method for preparing substantially pure molten salts is also described.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: March 1, 2005
    Assignee: The Regents of the University of California
    Inventors: Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell, Simon B. Hall
  • Patent number: 6861014
    Abstract: An electrochromic system having a first electrode disposed on a transparent or translucent substrate, a second electrode, an electrolyte, an electron donor in solution in the electrolyte, and a nanoporous-nanocrystalline film. The nanoporous-nanocrystalline film has a semiconducting metallic oxide with a redox chromophore adsorbed thereto, intermediate the first and second electrodes.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: March 1, 2005
    Assignee: University College Dublin
    Inventors: Donald Fitzmaurice, S. Rao Nagaraja, Rachel Cinnsealach, Brendan Enright
  • Patent number: 6853472
    Abstract: Electrolyte solutions of soluble bifunctional redox dyes in molten salt solvent may be used to prepare electrooptic devices with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?).
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: February 8, 2005
    Assignee: The Regents of the University of California
    Inventors: Benjamin P. Warner, T. Mark McCleskey, Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Anthony K. Burrell
  • Patent number: 6822778
    Abstract: An improved electrochromic device comprising a substrate and a first conductive layer located on the transparent substrate. An ion storage layer is located on the first conductive layer. An electrolyte layer is located on the ion storage layer with an active layer being located on the electrolyte layer. A second conductive layer is located on the active layer.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: November 23, 2004
    Assignee: Eclipse Energy Systems, Inc.
    Inventors: Raymond T. Westfall, Nikolai Kislov
  • Patent number: 6798554
    Abstract: The present invention concerns a flexible electrochrome structure operating in reflection at wavelengths between 0.35 and 20 &mgr;m. It comprises a microporous membrane including an electrolyte and, deposited on each of the surfaces of the microporous membrane, in a symmetrical manner in relation to said membrane, successively and in this order: a layer forming a reflecting electrode, a layer of electrochrome conductive polymer, and a flexible window transparent to wavelengths between 0.35 and 20 &mgr;m.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: September 28, 2004
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Patrick Hourquebie, Patrice Topart, Hubert Pages
  • Patent number: 6791737
    Abstract: An electrochemical device comprising at least one substrate (1, 7), at least one electroconductive layer (2, 6) at least one electrochemically active layer (3, 5) capable of reversibly injecting ions, and an electrolyte (4), wherein the electrolyte (4) is a layer or a multilayer stack comprising at least one layer (4b) made of an ionically conductive material capable of reversibly injecting the ions but whose overall degree of oxidation is maintained essentially constant.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: September 14, 2004
    Assignee: Saint-Gobain Glass France
    Inventor: Jean-Christophe Giron
  • Patent number: 6785036
    Abstract: The invention describes an electrochromic display element in the form of an electrically dimmable mirror, an optical filter having an electrically alterable transparency or a display element which contains an electrochromic liquid between two electrode sheets, where at least one of the electrode sheets is transparent and has a transparent, electrically conductive layer and the transparent electrode sheet has a pattern of strips or grid made of a material having metallic conductivity in order to produce a uniform coloration of the electrochromic liquid.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: August 31, 2004
    Assignee: Bayer Healthcare AG
    Inventors: Horst Berneth, Uwe Claussen, Ralf Neigl, Wolfgang Jacobsen
  • Patent number: 6767624
    Abstract: The present invention relates to composite elements comprising at least one layer A which comprises at least one solid electrolyte Al, at least one adhesion-promoting layer B having a thickness of <100 &mgr;m and at least one component C which provides the composite layer with electrochromic properties, where composite elements of this type are particularly suitable for use in electrochromic windows, and to electrochromic windows and glazing comprising a composite element of this type, and to processes for the production of these composite elements.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: July 27, 2004
    Assignee: BASF Aktiengesellschaft
    Inventor: Bernd Bronstert
  • Patent number: 6755993
    Abstract: A method for the manufacture of an electrochromic system using a nanoporus-nanocrystalline film comprising a semiconducting metallic oxide having a redox chromophore adsorbed thereto.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: June 29, 2004
    Assignee: University College Dublin
    Inventors: Donald Fitzmaurice, S. Rao Nagaraja, Rachel Cinnsealach, Brendan Enright
  • Patent number: 6747779
    Abstract: An electrochemical device including at least one carrier substrate, and a stack of functional layers comprising at least one electrically conducting layer comprising metal oxide(s), and a multicomponent electrode including at least one electrochemically active layer, at least one higher-conductivity material and at least one network of one of conducting wires and conducting strips, the higher-conductivity material having a surface resistance which is lower than a surface resistance of the electrically conducting layer.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: June 8, 2004
    Assignee: Saint-Gobain Glass France
    Inventors: Claude Morin, Fabien Beteille, Jean-Christophe Giron
  • Patent number: 6714334
    Abstract: An electrochromic variable reflectance mirror for a vehicle includes a front element and a rear element. A seal is provided to sealably bond the elements together in a spaced-apart relationship to define a chamber, and an electrochromic material is disposed in the chamber. The seal comprises an epoxy resin cured with a cycloaliphatic amine. The cycloaliphatic amine may be a bis(cycloaliphatic) amine, or more specifically, bis(aminocyclohexyl) methane (PACM). The epoxy resin may be an epoxy novolac resin such as an epoxy phenolic novolac (e.g., DEN431) or an epoxy cresyl novolac resin, a bisphenol A epoxy resin, a bisphenol F epoxy resin, a tetraglycidyl methylenebisbenzenamine, or a glycidyl benzenamine.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 30, 2004
    Assignee: Gentex Corporation
    Inventor: William L. Tonar
  • Patent number: 6710906
    Abstract: An electrochromic medium for use in an electrochromic device comprising: at least one solvent; an anodic electroactive material; a cathodic electroactive material; wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and wherein at least one of the anodic and cathodic electroactive materials is associated with a diffusion coefficient controlling moiety which serves to lower the diffusion coefficient of the associated material relative to the same without the diffusion coefficient controlling moiety.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: March 23, 2004
    Assignee: Gentex Corporation
    Inventors: Thomas F. Guarr, Kathy E. Roberts, Rongguang Lin, Kelvin L. Baumann, David A. Theiste, Punam Giri, Elizabeth M. Sanford
  • Publication number: 20040047531
    Abstract: A device and method for optical isolation for use in optical systems is disclosed. The device provides for a waveguide optical isolator fabricated using two arms, made of optical waveguides comprising magneto-optical material, in a Mach-Zehnder interferometer configuration. The device of the present invention operates using the TM mode of a light wave and, thus, does not require phase-matching of TM and TE modes. Further, the present invention does not use polarizers to extinguish the optical feedback.
    Type: Application
    Filed: June 30, 2003
    Publication date: March 11, 2004
    Inventors: Junichiro Fujita, Miguel Levy, Richard M Osgood
  • Patent number: 6697185
    Abstract: An electrochromic device comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) a solvent; (2) a cathodic electroactive material; (3) an anodic electroactive material, wherein at least one of the anodic and cathodic electroactive materials is electrochromic; and (4) a color-stabilizing additive, wherein the color-stabilizing additive is electroactive within a normal operating voltage of the electrochromic device; and (d) means associated with the color-stabilizing additive for maintaining an at least nearly colorless electrochromic device while the electrochromic device is in an open circuit and/or zero potential state relative to the same device without the color-stabilizing additive.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: February 24, 2004
    Assignee: Gentex Corporation
    Inventors: Jeffrey R. Lomprey, Thomas F. Guarr
  • Patent number: 6657768
    Abstract: The electrochromic devices have an ion conductive layer formed by curing a composition comprising a bipyridinium compound represented by the formula a specific metallocene compound and a precursor of a polymeric solid electrolyte, between two electrically conductive substrates, at least one of which is transparent.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: December 2, 2003
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Yoshinori Nishikitani, Masaaki Kobayashi, Hiroshi Imafuku